57673728 has 192 divisors, whose sum is σ = 196560000. Its totient is φ = 16367616.

The previous prime is 57673697. The next prime is 57673729. The reversal of 57673728 is 82737675.

57673728 is a `hidden beast` number, since 576 + 7 + 3 + 72 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (57673729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386998 + ... + 387146.

It is an arithmetic number, because the mean of its divisors is an integer number (1023750).

Almost surely, 2^57673728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57673728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98280000).

57673728 is an abundant number, since it is smaller than the sum of its proper divisors (138886272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57673728 is a wasteful number, since it uses less digits than its factorization.

57673728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 161 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 57673728 is about 7594.3220895614. The cubic root of 57673728 is about 386.3604604424.

The spelling of 57673728 in words is "fifty-seven million, six hundred seventy-three thousand, seven hundred twenty-eight".